Floating-tool holder



July 16, 1929. i I J, DRAEGER 1,721,378

FLOATING TOOL HOLDER Filed April 30, 1928 smut Gustav JDraeger er ii.

GUSTAVE 3'. DRAEGER, O13 RACINE, WISCONSIN.

FLOATING-TOOL HOLDER.

I Application filed April 30,

My invention relates to a floating tool holder, and it is an object ofthe invention to provide a simple and inexpensive device of thischaracter which will conform to a slight misalignment of the workand'perform satisfactorily cutting operations, all as will behereinafter more particularly described and claimed.

Referring to the accompanying drawings which are madea part hereof andon which similar reference characters indicate similar parts,

Figure 1 is a top plan view, illustrating one application of myinvention,

Figure 2, a side elevation, V

Figure 3, a view taken on a line 33 of Figure 1, V

Figure 4, a transverse section taken on line 4-4:, Figure 1, and

Figure 5, a perspective of the tool holder,

In the drawings, reference character 10 mdicates a head having anintegrally formed shank 11 adapted to be engaged by the machine in whichthe device is detachably carried. The head 10 is provided with a transverse tapered slot at its front end which forms a pair of opposedprojecting members 12 between which is adapted to be inserted the end ofa rod not shown, which is adapted to-be operated upon. The head 10tapers to the forward extremities of each of the members 12 on the topand bottom of the same, and said head is provided with a slot 13disposed at right angles to the members 12 for the reception of thefloating tool holder 14, shown in Figure 5. This floating tool holder isrecessed or slotted in the center to provide side members 15 and 16,having tapered inner edges, said side members being also provided withrecesses for the reception of loosely mounted, or floating, cutters 17and 18, which are held in place by screws 19. The heads of the screws 19are located in transverse depressions or recesses 20 in the side members15 and 16, such depressions 20 being slightly elongated to permit aslight sliding movement of the cutters. Adjusting screws 21 are threadedthrough the back of the members 15 and 16 for engaging the rear edge ofthe cutters for holding them in proper adjust-ed position. The holder 14is provided with a tapered opening 22 for the reception of a screw 23for holding the member 1 1 in position in the head '10, said screwhaving a tapered portion 24 for cooperation with the tapered opening 22forholding the parts 1928. Serial No. 274,147.

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in the proper assembled relation, said screw having its reduced portionthreaded into one side ofthe head as shown. With the above constructionthe cutters 1'? and 18 are maintained in the proper fixed spacedrelation by their holder, which permitted to slightly pivot on itsholding screw 23 to thus perform accurately the operation of cutting thework to the proper size.

It will be understood from the above that I I have provided'a head, theshank of which is adapted to be firmly secured in a rotating support,and between the opposed members 12 is adapted to be inserted theextremity of a rod which is intended tobe cut tothree differentdiameters the smaller of which is adapted to v be threaded. In order toform the cutting operation accurately no matter if the parts areslightly out-of alignment the cutters are carried in fixed relation inthe transverse memher 1 1 which may rock on the screw 23 as a pivotwhich screw extends through the tapered opening 22, the cutters being ofcourse adjustable toward and from each other as described, for varyingthe diameters out, the inner portion of the member 22 serving as'a stopfor terminating the cutting operation.

It will be obvious to those skilled in the art that various changes maybe made in my device without departing from the spirit of the invention,and I, therefore, do not limit myself to what is shown in the drawingsand described in the specification, but only as set forthin the appendedclaims.

Having thus fully described my said in vention, what I claim as new anddesire to secure by Letters Patent, is:

1. In a device of the class described the receiving recess, an openingthrough the head disposed transversely of the work receiving recess, acutter holder pivotally' disposed in said transverserecess and adaptedto move about its pivot in order to conform to the work and formingopposed jaws on opposite sides of the work, and cutters pivoted inopposed relation on said jaws of the cutter holder saidcutters havinginwardly extending cutting edges, substantially asset forth.

2. The combinationof a cutter head adapted to be mounted in a rotarysupport said head being formed with a recess for receiving the workoperated upon,'an opening through the head substantially at right anglesto the work receiving recess for accommodating a floating cutter holder,a cutter holder pivoted in said opening movable about its pivot in orderto conform to the work said cutter holder having a work receiving recessand inwardly projecting opposed cutters carried by the the headsubstantially at right angles to the Work receiving recess foraccommodating a floating cutter holder, a cutter holder pivoted in saidopening movable about its pivot in order to conform to the work saidcutter holder having a work receiving recess and inwardly projectingopposed cutters carried by the cut ter holder on opposite sidesof therecess for operating upon the exterior of work presented in saidrecesses, said cutters being provided forwardly ofit-s pivot, formingaws for disposal on opposite sides of the work said jaws being providedwith recesses disposed on opposite faces of the holder, and opposedcutters disposed in said recessesand provided with stepped cuttingportions, the bottom of the recess between the opposed jaws beingadapted to limit the movement of the work'between the cutting portions,substantially as set forth.

In witness whereof, I have hereunto set-my hand at Racine, Wisconsin,this 23rd day of April, A. D. nineteen hundred and twentyeight.

GUSTAVE J. DRAEGER.

